rust/tests/ui/consts/const-fn-not-safe-for-const.rs

36 lines
555 B
Rust

// Test that we can't call random fns in a const fn or do other bad things.
use std::mem::transmute;
fn random() -> u32 {
0
}
const fn sub(x: &u32) -> usize {
unsafe { transmute(x) }
}
const fn sub1() -> u32 {
random() //~ ERROR E0015
}
static Y: u32 = 0;
const fn get_Y() -> u32 {
Y
//~^ ERROR referencing statics in constant functions
}
const fn get_Y_addr() -> &'static u32 {
&Y
//~^ ERROR referencing statics in constant functions
}
const fn get() -> u32 {
let x = 22;
let y = 44;
x + y
}
fn main() {}